Throughout much of the 1950s and 1960s, the most popular style of windows used on travel trailers was the Hehr Standard model. Airstream used them routinely from 1952-1958. These awning-style windows are characterized by square corners, but a round-corner look.
The glass is held in with aluminum brackets screwed in place from behind using #8-32 slotted truss head machine screws and #8-32 stamped steel tension nuts. The original stamped nuts are self-locking and very hard to find.
To replace missing or rusty screws and nuts, use this kit of 100 screws and 100 nuts.
Zinc plated steel.